Gaussian Elimination in Matlab

Naive Gaussian Elimination in Matlab command window for 4 x 4 matrix. Also use command history to create a Matlab script file.

Your sound is like Forrest Gump

[@yermekatchibayev4062]

*yroue

[@EpateEX]

I was having an issue with trying to code this in the most general, iterative fashion, but watching this really helped, thanks.

[@whoskentay3016]

This dude camera suck but his explanation go hard. Thanks alot Mr. Keith. That was beautiful.

[@geoffguest1374]

try this: function x = Gauss2(A, b) % Solve linear system Ax = b % using Gaussian elimination without pivoting % A is an n by n matrix % b is an n by k matrix (k copies of n-vectors) % x is an n by k matrix (k copies of solution vectors) [n, n] = size(A); % Find size of matrix A [n, k] = size(b); % Find size of matrix b x = zeros(n,k); % Initialize x for i = 1:n-1 m = -A(i+1:n,i)/A(i,i); % multipliers A(i+1:n,:) = A(i+1:n,:) + m*A(i,:); b(i+1:n,:) = b(i+1:n,:) + m*b(i,:); end; % Use back substitution to find unknowns x(n,:) = b(n,:)/A(n,n); for i = n-1:-1:1 x(i,:) = (b(i,:) - A(i,i+1:n)*x(i+1:n,:))/A(i,i); end

[@brian77771]

YOU ARE A LIFE SAVER

[@kastossss]

Did you record this video with calculater body?

[@ManuelSeromenho]

Hi thanks for the video, do you now a general code for back substitution? For example if I have a matrix bigger or smaller, but if I want to generalize? Like a For loop ?

[@priyasharay5089]

Can you do the same video with a general syntax for n *n matrix using loops in m-file ?Thank you

[@ronhernandez8857]

+Priyasha Ray would be cool huh?

[@73moustamra87]

tried doing your example but my determinant gave me a zero,

[@sakshishrivastava6626]

such a good explainantion THANKS :)

[@mthemaniac]

For some reason I get det (c) = 0 Also get 0 in an online matrix calculator. Something is wrong!

[@dayanaroslan5292]

THank you very much!

[@yuminkochin9095]

You sound like god.

[@omarmorgado5582]

My name is Forrest Gamp, but you can call me Forrest Gamp.

[@TEAGE1403]

greets from germany

[@hemachandpriyan1214]

shall u pls comment the code or upload it

[@yuminkochin9095]

Than you so much!!!!

[@stevewillams5847]

use a better software next time to capture the video

[@olitomar]

yeah, the pixelated screen on HD video looks pretty bad :( thanks for the video!

[@giridharsamineni9740]

Point ki ra???

[@mixasoda]

Your sound like Montasir

[@ican792]

Please, people want to get answer straightly by coding, not by manual in coding

[@Ch17638]

Good example poor video quality

[@trikal8949]

Ash9le

[@paulbaade3564]

m8 wtf is this video quality?

[@matthewmolinar]

EXCELLENT. Thanks edit - If you're complaining about the code/ redundancy, this is the theoretical way to do things, and it's up to you to manipulate it as you see fit, skipping steps, making use of built-in functions, and to also type it up on a script lmao

[@산타돼지]

Many Many thanks for your good lecture!

[@산타돼지]

This lecture released my pain

[@maniac123ful]

thanks for the epilapsy

[@syamsuonfire]

Good video bro

[@TheAlbensi]

Thank you Thank you